Finding the Fourth Proportional to 12,499.23, 18,749.18 and 5,475.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.23 : 18,749.18 = 5,475.63 : x
2. Step 2: Convert to fraction form
   12,499.23/18,749.18 = 5,475.63/x
3. Step 3: Cross multiply
   12,499.23x = 18,749.18 × 5,475.63
4. Step 4: Simplify right side
   12,499.23x = 102,663,572.48
5. Step 5: Solve for x
   x = 102,663,572.48/12,499.23
6. Step 6: Final answer
   x = 8,213.59